There ia another way...
You could always make a USB adaptor with only the + and - connected.
i.e. with the two data wires cut.

Rog

Actually i just need the player to charge from main via usb cable+usb power adapter. At the moment if i connect the player to main without turning it on, it will boot to OF. I want to avoid this. If i turn it on first and then plug it, it correctly boot into Rb and charge.

Il giorno 27/mag/2011 22.06, "Michael Sparmann" <theseven_at_gmx.net> ha scritto:
>> The problem with the clip+ is bug #11664. For what we are going to use
>> the player for, it is very important to have only the rockbox firmware
>> to boot, even when plugged to a pc or to main via usb cable.
>> For the rest, we use only the basic functions of RB, mainly playlists
>> and crossover.
>
> Do you need Rockbox USB support to work, or do you just want it to
> charge (but not transfer data) when being plugged into a PC?
> (You could still transfer data to the player by means of a microsd card
> and a card reader.) The latter would be trivial to achieve.
>